public function testDispatchConstraintsLeaf($class, $args, $expectedClass)
{
$expectedPhpcrClass = '\\PHPCR\\Query\\QOM\\' . $expectedClass;
$this->primeBuilder();
$constraint = $this->createNode($class, $args);
$res = $this->converter->dispatch($constraint);
$this->assertInstanceOf($expectedPhpcrClass, $res);
}